Chicken tractor questions

I know these questions may seem silly or unnecessary, but I never even heard of a chicken tractor until a couple weeks ago, so I just don't know that much about this.

We have almost an acre, and while it would be nice to have the chickens in the tractor in what I call "the back 40", I don't think it's practical because there is no shade whatsoever back there. We could put them in "the dog yard" because it's shaded and cooler and that leads me to this: do people leave their chickens in the tractors overnight or do they move them back into the coop at night? I've seen different designs of tractors that have smaller doors where you can take eggs out, etc, and I'm thinking we would only have ours in this thing during the day. Do they generally live in this thing during the summer?

It just depends on how big the tractor is, how many chickens you have, and what your weather is like. But I know some people keep chickens in them all the time.

Mine is small. I used it to move my "teenager" chickens into when they outgrow the brooder. Also, I put a few hens in mine and set it on my garden beds to eat the weeds and bugs, but my chickens mainly live in the coop.

Oh! I took two bully barred rocks out of the coop yesterday, and stuck them in the tractor. They were beating up some new young chickens, so I am giving them a "time out" to let the newbies adjust!

I just brought this up to my husband last night, about building one, and I'm looking online to see the different types. At first I kept seeing them out in the very back (in my mind's eye) but it's just too hot, even with a shade built over the top. So I think we'll shoot for a really simple design, lightweight, that we can move around easily and just put them in it during the day. I don't think I want to leave them in it all the time.

I'm in NY, so maybe I don't understand the heat you experience. But you can build a well ventilated shade tractor easily enough. Why would that be any different than the shade of a tree?
My chicken tractor is my only home for the chickens. I don't have heat to deal with, I just have the cold winters. So I got chickens that are better able to handle the cold, and I'll move my tractor into the barn when the really cold weather arrives.

Well, out in the back part of our property, it's open with no shade and the grass back there is drying out and getting crunchy. I'm thinking there would be more bugs for them to find in the shaded part where it's greener and, to me, cooler. It's up in the 90's and in that kind of scorching sun, I don't see how a cover on a tractor would be adequate. I'm not saying it wouldn't, it just seems like it, though.

I put my 7 Silkies out in a tractor during the day.
We haven't much in the way of shade and here in the southeast it can get pretty gosh darn hot! But if it is nice enough they stay in the tractor during the day. It has a plywood roof over it and is 4x8 with a small enclosure in case it rains.
There is a nice breeze most of the time and if it gets horrible hot I move it under the shade trees but try to save those areas for the hottest days. I also will put frozen jugs of water down for them and ice in their waterer.
I have a 4x4 tractor that has a single Silkie roo in it right now since he wanted to terrorize some girls. His hormones are raging and he can't a grip on himself.
I move the tractors almost every day but we have a lot of land so we have options.
I also put everyone up at night in the barn. Too many monsters out at night for the babies to be scared of! And a few bears have been spotted so a nice thick wall and concrete floor makes me and them happier.